| 1. | The towboats cut their lines and the vessel s anchors dragged.
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| 2. | It was pushed by the steam towboat " Belle Prince ."
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| 3. | The State of West Virginia converted the towboat into a showboat.
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| 4. | Towboats'propellers were then used to free the rig.
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| 5. | The towboat was pushing two barges when the accident happened.
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| 6. | Such barges need to be towed by tugboats or pushed by towboats.
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| 7. | The towboat must be capable of maintaining the proper speed.
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| 8. | The towboat's four crew members were not injured.
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| 9. | Barges are usually unpowered and must be moved by tugboats or towboats.
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| 10. | Private capital followed these improvements with heavy investments in towboats and barges.
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